#B03630#B03630

#B03630 is a mid, vivid red. Relative luminance 0.121; OKLCH L 51.3% C 0.159 H 27.1°. Best body text is #FFFFFF at 6.15:1 contrast (WCAG AA passes).

Color values

HEX	#B03630
RGB	rgb(176, 54, 48)
HSL	hsl(3, 57%, 44%)
HSV	hsv(3, 73%, 69%)
CMYK	cmyk(0%, 69.3%, 72.7%, 31%)
CIE-LAB	lab(41.35, 49.00, 31.91)
CIE-LCH	lch(41.35, 58.47, 33.08°)
OKLab	oklab(51.32% 0.1418 0.0725)
OKLCH	oklch(51.32% 0.159 27.1)
XYZ	xyz(19.7593, 12.0848, 4.0879)
Luminance	0.1208 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B03630 #30AAB0

analogous

#B0306A #B03630 #B07630

triadic

#B03630 #30B036 #3630B0

tetradic

#B03630 #6AB030 #30AAB0 #7630B0

square

#B03630 #6AB030 #30AAB0 #7630B0

split-complementary

#B03630 #30B076 #306AB0

monochromatic

#501816 #802723 #B03630 #CF544E #DC837E

Accessibility & contrast

On white

6.15

#B03630 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.42

#B03630 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B03630

6.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B03630	#FFFFFF	#000000	##FFFFFF
##B03630	1.00	6.15	3.42	6.15
#FFFFFF	6.15	1.00	21.00	1.00
#000000	3.42	21.00	1.00	21.00
##FFFFFF	6.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#59512E

Deuteranopia (green-blind)

#776B2C

Tritanopia (blue-blind)

#C20F36

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #b03630;
/* rgb */ color: rgb(176, 54, 48);
/* oklch */ color: oklch(51.3% 0.159 27.1);

Tailwind

colors: {
  custom: {
    50: '#cf7569',
    500: '#b03630',
    950: '#000000',
  },
}

SCSS

$custom: #b03630;
$custom-light: #cf7569;
$custom-dark: #000000;

JSON

{
  "hex": "#b03630",
  "rgb": {
    "r": 176,
    "g": 54,
    "b": 48
  },
  "hsl": {
    "h": 2.813,
    "s": 57.143,
    "l": 43.922
  },
  "oklch": {
    "l": 0.51323,
    "c": 0.15925,
    "h": 27.1
  },
  "luminance": 0.12082
}

Semantic roles & 50–950 ramp

primary

#B03630

secondary

#77C1C5

accent

#D9E047

background

#FDF7F6

surface

#FBEDEB

border

#D4C8C6

text

#150906

muted

#837B7A

Preview Lab

Preview with #B03630

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →